Fifth in this important series which, by mixing early historic electronic music recordings with more contemporary laptop and ensemble pieces, takes an unusually broad view of its topic, leaving it to the listener to make theoretical and aesthetic judgements. The works featured here date mostly from the '60s and '70s, however. Of special interest are Francois-Bernard Mache and Andre Boucourechiliev (1959), Wolf Vostell (1968), Josef Anton Riedel (1963), two rare electronic works by Helmut Lachenmann and Claude Bailiff (1962) and Kagel's Antithese. Mayakovsky and Hausmann represent earlier experiments and Pere Ubu and Ground Zero more recent abstract/noise experiments by bands. Other early works featured are by Richard Maxfield, Charlemagne Palestine, Alireza Masheyekhi (Iran, 1966), Jil Josef Wolman, Leo Kupper, Henri Chopin and a very interesting long piece by Dub Taylor (1972). Later works are by Rogelio Sosa, Christian Galaretta, Dickson Dee and Dajuin Yao (China), Yamaaki Takushi, Sutcliffe Jugend and Club Moral. The aesthetic and technological contrasts evident as the CDs unfold tell their own story, and this volume is a useful addition to an already critical and in some ways definitive collection. This is a resource and not everyone will like every track - though all are informative and many appear here for the first time. Comes with useful notes.